| SARS-COV2 | severe acute respiratory syndrome coronavirus 2 |
| COVID-19 | coronavirus disease 2019 |
| ACE2 | angiotensin-converting enzyme-2 |
| FGID | Functional gastrointestinal disorders |
| FAPD | Functional abdominal pain disorders |
| FD | Functional dyspepsia |
| AM | Abdominal migraine |
| FAP-NOS | Functional abdominal pain not otherwise specified |
| IBS | Irritable bowel syndrome |